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Acid Rain and Ozone Depletion May Have Triggered Mass Extinction 250 Million Years Ago
2013-11-23 18:02:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature World: Acid rain and ozone depletion may have caused the Earth's most severe known mass extinction, a new study published in the journal Geology suggests. Some 250 million years ago, at the end of the Permian period, more than 90 percent of marine species and over 70 percent of terrestrial species died off, setting the scene for the day of the dinosaur. The die-off was so extreme that, according to fossil records left behind, ecological diversity was not fully restored for another several million...
Polarizing Cube Beamsplitters offer 3000:1 extinction ratio.
2013-10-23 14:30:38| Industrial Newsroom - All News for Today
Offering alternative to Brewster windows, High Energy Polarizing Cube Beamsplitters provide typical damage threshold of 15 J/cm² at 1,064 nm, 10 ns, 20 Hz. Products are constructed by optically contacting UV fused silica right angle prisms, rather than cementing them. Available in 12.7 mm cube size for use with variety of Nd: YAG laser wavelengths, beamsplitters feature greater than 99.5% reflection of S-polarized light and more than 97% transmission of P-polarized light at design wavelength. This story is related to the following:Beamsplitters
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Last Hours' Film Raises Issue Of Global-Warming-Induced Extinction
2013-10-11 06:09:59| pollutiononline Home Page
"We've been talking about rising sealevels and extreme weather events," said authorThom Hartmann."Now we need to talk about extinctions."
Forest fragmentation leading to higher extinction rates
2013-08-13 20:17:00| Climate Ark Climate Change & Global Warming Newsfeed
Mongabay: The world's species are in worse trouble than widely-assumed, according to a new paper in the Proceedings of the National Academy of Sciences (PNAS), which reevaluates how scientists estimate extinction rates. The new model takes into account the impact of forest fragmentation on extinction rates for the first time, filling in a gap in past estimates. Much of the world's tropical forests, which house the bulk of the world's species, have been whittled down to fragments: small forest islands that...
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Climate Change Imperils Efforts to Save Lynx from Extinction, Study Finds
2013-07-22 23:03:00| Climate Ark Climate Change & Global Warming Newsfeed
National Geographic: Almost 100 million euros (U.S.$ 130 million) has been spent so far on conservation efforts for the last 250 remaining Iberian lynxes in the wild, but the world`s most endangered cat species is likely to go extinct within 50 years because the management plans do not provide for the effects of climate change, researchers warn. Our models show that the anticipated climate change will lead to a rapid and dramatic decline of the Iberian lynx and probably eradicate the species within 50 years, in spite...
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